Strap-on dildo



FIG. 1 is a top plan view of a strap-on dildo, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevation view, the right side elevation view being a mirror image thereof; and,

FIG. 4 is a bottom view thereof. 

CLAIM The ornamental design for a strap-on dildo, as shown and described. 